AUXIN is a playable word

auxin Scrabble® Dictionary

noun
pl. auxins
a substance used to regulate plant growth
(adjective) auxinic
15 Playable Words can be made from "AUXIN"
   2-Letter Words (9 found)
   3-Letter Words (4 found)
   4-Letter Words (1 found)
   5-Letter Words (1 found)